Burglar-alarm



(N0 Model.)

J. J. GRIFFITH.v

A o/my UNiTEn STATES PATENT OFFICE.-

J OIIN JAMES GRIFFITH, OF SAN BERNARDINO, CALIFORNIA.

BURGLAR-ALARM.

SPECIFICATION forming part of Letters Application filed March 2, 1889.

To all whom it may concern:

Be it known that I, JOHN JAMEs GRIFFITH, of San Bernardino, in the county of San Bernardino and State of California, have invented a new and Improved Burglar-Alarm, of which the following is a full, clear, and exact description. i

The object of the invention is to provide a new and improved portable burglar-alarm, which is simple and durable in construction, very effective in operation, and adapted to be quickly and conveniently attached to a door or window whenever desired.

The invention consists of a balloon provided with a whistle, avalve held on the said whistle, and a locking device for holding the valve in place.

The invention also consists in certain parts and details and combinations of the same, as will be fully described hereinafter, and then pointed out in the claims.

Reference is to be had to the accompanying drawings, forming apart of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a side elevation of the improvement. Fig. 2 is a like view of the same as applied on a door, which latter is in section. Fig. 3. is an enlarged sectional View of the improvement, parts being broken out. Fig. 4 is a plain view of the valve-top. Fig. 5 is a transverse section of the same. Fig. 6 is an inverted plan view of the whistle. Fig. 7 is a plan view of the same. Fig. 8 is a trans verse section of the same on the line a w of Fig. 7, and Fig. 9 is an inverted plan view of the mouth-piece.

The improved burglanalarm A comprises a balloon B, carrying a mouth-piece O and a whistle D, on which is held a self-opening valve E, having a locking-arm. An elastic cord or string F is secured to the mouth-piece O, and is adapted to be fastened to a chair, bed-post, or other convenient article in the room, to which the burglar-alarm is to be applied.

The balloon B is of the usual toy pattern, preferably, however, made of better material. The mouth-piece O is attached to one end of the balloon, and is made in two pieces 0 and C of which the former is secured to the bal- Patent No. 439,503, dated October 28, 1890.

Serial No, 301,760. (No model.)

10011 and opens into the same, while the latter turns on the part C. The opening-C in the part C leads to the interior of the balloon, and the outer end of the said opening is eccentric and adapted to register with an opening 0*, formed eccentrically in the part C so that when the latter is turned on the part O the apertures O and C may be brought into or out of register whenever desired. A rubber Washer C is placed between the parts C and O and is provided with an aperture which always registers with one of the apertures O or G. hen the mouth-piece is in the position shown in Fig. 3, the balloon B can be blown up, and then the part O can be turned so that the opening O is disconnected from the opening C The balloon B then remains charged.

The whistle D maybe of any approved construction having one or more tones. As illustrated in the drawings, the whistle D (30111- prises the tube D, having in its bottom one or more openings D covered on the under side with the usual sounding-reeds D In the upper end of the tube D is formed a valveseatD, preferablycone-shaped, and linedwith a rubber ring. Onto this valve-seat fits the valve G, hinged by a spring-hinge H to the upper end of the tube D, as is plainly shown in the drawings. tendency to throw the valve G open into the position shown in dotted lines in Fig. 3.

The valve G is provided with a top plate I, having guideways I, in which is fitted to slide an arm J, preferably made in the form of a wedge, as illustrated in the drawings. The arm J is adapted to slide from the hinge II, so that its pointed end will extend beyond the plate I, as is shown in dotted lines in Fig. 3. hen the arm J is in this position, it may be placed between the door and the jamb, between the window-sash and the frame, or between any two parts one of which opens from the other.

On the side opposite to the hinge II is pivoted to the tubeD an arm L, preferably made wedge-shaped and adapted to be folded onto the tube D, as shown in dotted lines in Fig. 3. hen the arm or wedge L is held in an outermost position, the arm J slides over it, so that both together form a double wedge,

The spring-hinge H has the which may be placed between two opening parts-such as in a door or windowas before described. The arm L, in connection with the arm J, serves to hold the valve G locked in place on its Valve-seat, and the arm L, in addition, prevents the balloon B and its whistle D from swinging outward by the force of the spring-hinge H. 7

The operation is as follows: When the operator desires to use the burglar-alarm in a room, on a door or window, trunk, or other' article, he closes the valve G with his finger and holds it closed while blowing up the balloon B, as before described. WVhen this is accomplished, the part 0 of the mouth-piece is turned so that the air in the balloon B is retained. The operator then moves the wedge-shaped arm J outward into the position shown in dotted lines in Fig. 3, and also moves the wedge-shaped arm L into its outermost position. The two arms J and L are then placed between the two opening parts of the article on which the burglaralarm is to be applied. The elastic cord or string F of the balloon may be secured to any desired place in the room, as before described. Now when a burglar opens the door or window, trunk, or other article to which the burglar-alarm is applied, the balloon becomes disconnected from the article and falls in the room. The valve G at the same time is opened by the action of the spring-hinge I-I, so that the air stored in the balloon B passes through the whistle D and sounds the same, thus giving the alarm. By providing the whistleD with W0 discordant ton es the alarm will be made effective.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. As a new article of manufacture, a burglar-alarm consisting in an inflatable balloon provided with a whistle to be sounded by the escaping air, a valve to prevent the exit of the air and opened by the falling or disconnection of the balloon from an article, and means, substantially as described,for attaching or suspending the balloon and holding the valve closed, substantially as set forth.

2. A burglar-alarm comprising aballoon, a whistle held on the said balloon, a self-opening valve held on the said whistle, and a looking device for holding the said valve in place on the said whistle, substantially as shown and described.

3. A burglar-alarm comprising a balloon, a whistle held on the said balloon, a springvalve pivoted on the said whistle and provided with a wedge-shaped arm serving as a lock, substantially as shown and described.

4:. A burglar-alarm comprising a balloon, a mouth-piece for filling the said balloon, a whistle held on the said balloon, a springvalve pivoted on the said whistle, and a lockin g device for holding the valve in place on the whistle, substantially as shown and de scribed.

5. In aburglanalarnnthe combination,witl1 a balloon and a whistle attached to the said balloon, of a spring-valve hinged on the said whistle and provided with a sliding wedgeshaped arm, and a second wedge-shaped arm pivoted on the said whistle, the two wedgeshaped arms being adapted to be brought together to suspend or attach the alarm and hold its valve closed, substantially as shown and described.

6. In aburglar-alarni,the combination, with a balloon, of a whistle held on the said balloon, a valve for'closing the said whistle, and a mouth-piece held on the said balloon opposite the whistle, provided with a movable part to close its bore after the inflation of the balloon, substantially as shown and described.

7. In a burglar-alarm, the combination, with a balloon, of a whistle held on the said balloon, a valve for closing the said whistle, and a mouth-piece made in two parts of which one turns on the other, both being provided with eccentric openings for opening or closing the mouth-piece, substantially as shown and described.

J OHN JAMES GRIFFITH.

Witnesses:

A. H. SEocoMBE, M. B. TERRASS. 

